20005664

素因数分解:

$2^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:158

約数の個数: 96

約数和(自身を含む): 48254976

約数和(自身を除く): 28249312

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 43, 56, 62, 67, 86, 112, 124, 134, 172, 217, 224, 248, 268, 301, 344, 434, 469, 496, 536, 602, 688, 868, 938, 992, 1072, 1204, 1333, 1376, 1736, 1876, 2077, 2144, 2408, 2666, 2881, 3472, 3752, 4154, 4816, 5332, 5762, 6944, 7504, 8308, 9331, 9632, 10664, 11524, 14539, 15008, 16616, 18662, 20167, 21328, 23048, 29078, 33232, 37324, 40334, 42656, 46096, 58156, 66464, 74648, 80668, 89311, 92192, 116312, 149296, 161336, 178622, 232624, 298592, 322672, 357244, 465248, 625177, 645344, 714488, 1250354, 1428976, 2500708, 2857952, 5001416, 10002832, 20005664]

約数ペア:

[(1, 20005664), (2, 10002832), (4, 5001416), (7, 2857952), (8, 2500708), (14, 1428976), (16, 1250354), (28, 714488), (31, 645344), (32, 625177), (43, 465248), (56, 357244), (62, 322672), (67, 298592), (86, 232624), (112, 178622), (124, 161336), (134, 149296), (172, 116312), (217, 92192), (224, 89311), (248, 80668), (268, 74648), (301, 66464), (344, 58156), (434, 46096), (469, 42656), (496, 40334), (536, 37324), (602, 33232), (688, 29078), (868, 23048), (938, 21328), (992, 20167), (1072, 18662), (1204, 16616), (1333, 15008), (1376, 14539), (1736, 11524), (1876, 10664), (2077, 9632), (2144, 9331), (2408, 8308), (2666, 7504), (2881, 6944), (3472, 5762), (3752, 5332), (4154, 4816)]